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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 16 — Aug. 15, 2010
  • pp: 2777–2779

Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

Orlando Frazão, Ricardo M. Silva, Jens Kobelke, and Kay Schuster  »View Author Affiliations


Optics Letters, Vol. 35, Issue 16, pp. 2777-2779 (2010)
http://dx.doi.org/10.1364/OL.35.002777


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Abstract

In this Letter, we present a fiber loop mirror configuration based on a suspended twin-core fiber for sensing applications. Using the suspended twin-core fiber, the fringe pattern is due to the differential optical patch of the light in the two cores associated with a refractive index difference of ~ 10 3 , which indicates an advantage of this approach compared with those based on high-birefringent fibers, namely, the possibility of using a small length of fiber. The sensing configuration was characterized for torsion, temperature, and strain. Using the fast Fourier transform technique, it is possible to obtain measurand-induced amplitude variations of the fringe pattern. The results obtained indicate the viability of a temperature- and strain-independent torsion sensor.

© 2010 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 18, 2010
Revised Manuscript: June 16, 2010
Manuscript Accepted: July 2, 2010
Published: August 13, 2010

Citation
Orlando Frazão, Ricardo M. Silva, Jens Kobelke, and Kay Schuster, "Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber," Opt. Lett. 35, 2777-2779 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-16-2777


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